People - Ideas - Solutions
Marine
NMEA2MODB
Versatile Ethernet I/O unit
The NMEA2MODB is an Ethernet-based versatile I/O- unit, which
can be used in various monitoring and control applications. The unit
is designed to be particularly suitable for ship applications, such as
Integrated Bridge Systems (IBS).
Get data from navigation equipment:
• GPS
• GYRO
• TORQUE
• WIND
• SPEED LOG
• DEPTH
• Etc.
The unit fulfils the IEC 60945:2002 EMC standard and respective
environmental standards.
Properties
The NMEA2MODB consists of a general purpose I/O part, communication parts, and an ethernet interface. The unit has a built-in power
supply unit with 18…36 VDC input range. Two separate power supply
sources, with automatic change-over are provided. The power source
and monitoring is included in the onboard software.
The I/O part contains 32 digital inputs and 32 digital outputs, 4 analog
inputs and 4 analog outputs. The unit contains a reference-voltage
source to supply external potentiometers or sensors.
The communication part contains six UART-type serial interface
channels with galvanic isolated RS422/RS485 or RS422 drivers. One
channel also has an alternative RS232 driver available. There is also
one galvanic isolated CAN-Bus channel. The ethernet part integrates a
5- port 10/100 ethernet switch.
The NMEA2MODB units can be connected in a chain, without the
need of an external ethernet switch (the onboard switch functions as
a normal ethernet switch). The setting-up and parameterisation of the
NMEA2MODB module is performed through the WEB-server, using a
normal
HTML-browser.
General purpose I/O (remote I/O Server)
Control of the TM-EFDC digital and analogue I/O- parts are available
through MODBUS/TCP protocol. The onboard basic software application contains a MODBUS/TCP server and the user can read the digital
and analogue input registers and write corresponding output registers
through this MODBUS/TCP server function.
The digital outputs can be selected to operate as 0...100% PWM
output for example the dimming of the panel pilot lights.
The software is compliant with the IEC 61162-1 standard.
Communication part (Serial Device server)
The TM-EFDC communication part operates as a serial data communication device server. With this server function, the traffic
through the UART (RS422 and RS232) and CAN- ports can be
transferred either by UDP or TCP- protocols into the Ethernet- network
(LAN).
The UART and CAN- controlled transport parameters and the UDP
and TCP server properties are set by the HTML browser.
The TM-EFDC unit has two RS422/485 and four RS422 galvanic
isolated serial channels. There is also alternatively RS232 line driver
available for one serial channel.
All RS422/RS485 and RS422 Serial channels fully conform to
IEC61162-2 standard and also compatible with IEC61162-1 standard
devices.
NMEA 0183 Configuration
INTRODUCTION
NMEA2MODB listens to user defined NMEA messages and
writes the data into Modbus registers.
Messages are specified in a text file named nmea2mbus.txt,
which is lo-cated in the sd-card of the EFDC. The text file can
be edited with an ordi-nary text editor, for example Notepad.
Each line in configuration file contain a single NMEA sentence
that the application should listen to. Sentence specification
can be seen as a two-level definition, where the first level
specifies the message format and second level the mapping
of the data fields to modbus registers.
EXAMPLE CONFIGURATION LINE
The message format notation follows closely the syntax used
in IEC-61162-1 standard. As an example, to specify that a HDT
sentence should be listened to, following line should be added
into the configuration file: $--HDT, x.x, T*
The preceding line states that:
- The sentence starts with “$”
-The next two characters can be anything, “-“ is a wildcard
which can be used in sentence identifier
- Next three characters must be “HDT”, which ends
the sen- tence identifier. This implies that the next character
must be “,”
- After the “,” comes a decimal number, containing optional
fraction part. This is identified with field type code “x.x”.
The number is followed by “,”
- Next character must be “T”, otherwise the message is ruledout
- “*” at the end of the message states that the message
contains NMEA checksum. If “*” is not specified as the last
character, the checksum is not required.
To add modbus register mapping, register definitions are
inserted into the format string. Register definitions are always
bracketed with “[“ and “]”.
CONFIGURATION FILE EXAMPLE
MAXNUMBEROFMSGDEFS 100
$--XDR[45057to3],G,x.x[45088*10v45078.1],a,001*
$--XDR[45058to3],G,x.x[45089*10v45079.1],a,002*
$--XDR[45059to3],G,x.x[45090*10v45080.1],a,003*
$--XDR[45060to3],G,x.x[45091*10v45081.1],a,004*
$--MWV[45061to3],x.x[45092*10v45077.1],a,x.x[45093*10v45077.2],a,A*
$--HDT[45062to3],x.x[45093*10v45075.1],T*
$--HDG[45063to3],x.x[45094*10v45076.1],x.x,a,x.x,a*
$--GGA[45064to3],hhmmss.ss,llll.ll[45095v45071.1],c[45096],yyyyy.yy[45097v45071.2],c[45098],x,x,x.x,x.x,c,x.x,c,x.x,x*
$--VTG[45065to3],x.x[45100*10v45072.1],T,x.x[45101*10v45072.2],M,x.x[45099*10v45072.3],N,x.x,K,a*
$--VBW[45066to3],x.x[45102*10v45073.1],x.x,A,x.x,x.x,A,x.x,A,x.x,A*
$--DPT[45067to3],x.x[45103*10v45074.1],x.x,x.x*
ETN
#3
M12
ETN
#4
M12
18..36 V dc
Terminals
8 ch relay module
Terminals
8 ch relay module
Terminals
8 ch relay module
32 x DO connector
for relay modules
32 x DO terminals
Automatic
Change-over logic
Terminals
8 ch relay module
18..36 V dc
18..36 V dc
18..36 V dc
10/100 ETHERNET to other I/O modules
32 x DI terminals
PNP/NPN
Current limitation
and over voltage
protection
Low side drivers
Curren + ov.temp. limit.
0..100% PWM out
4 x AI terminals & ±10,0V ref
A/D converter
±10V input
±10,0 V ref
output / 200Ω
SD memory card
interface
4 x AO terminals
D/A converter
±10V output
4 MB Flash
+
-
64 MB SDRAM
TM-EFDC-32DI+32DO+4AI+4AO+PWM+REF
µController
ARM®
5-port Ethernet
switch + PHY
1x UART
RS232 or
RS422 (isolated)
CAN 2.0 A&B
ETN
#1
RJ45
ETN
#2
RJ45
3 x UART
RS422
(IEC61162-1/2)
2 x UART
RS422
(IEC61162-1/2)
RS485
#1
#2
#3
#4
#5
#6
CAN
RS232
RS422
RS422
RS422
RS422
RS422
RS422
CAN DEVICES
ANY RS232
DEVICE
ANY RS422
DEVICE
NMEA2MODB
NMEA2MODB
NMEA2MODB
NMEA2MODB
NMEA2MODB
CAN
10/100 ETHERNET /
MODBUS/TCP / UDP
UPPER LEVEL SUPERVISION and
CONTROL SYSTEMS
-MODBUS/TCP CLIENT(S) (I/O-control)
-UDP or TCP (UART and CAN channels)
-HTTP Client (configuration)
System diagram
and connections
#1
#1
General
Power supply input
24 Vdc (18...36 Vdc) Power requirement 10W (typically 6W). Connections to two separate power sources.
Power supply automatic switchover, if the primary input voltage drops below the permitted value.
The power supply input state is indicated to the Remote I/O server register. Wiring to spring cage plug-in terminals
Operating temperature
-20...+55°C
Processor
32 bit, 200 or 400 MHz ARM processor
Memory
4 MB FLASH
64 MB SDRAM (32 bit)
SD-interface for a memory card
Dimensions and weight
300x128x57 mm (lxwxd), approx.. 1000g
Approvals
IEC 60945:2002 / CE
Options
Fixing options (DIN-rail, direct mounting) / System cabling options, relay modules
Communication
Ethernet Switch
External ports:
Protocol
Integrated 5-port 10/100 Ethernet-switch.
2pcs RJ45 and 2pcs M12 (D-coding) connectors
Using the UDP or TCP -protocol
Serial UART Channels
Totally 6 channels. Wiring to spring cage plug-in terminals
Fully conformity to IEC61162-2 standard and compatible with IEC61162-1 standard devices.
2pcs RS422/RS485 full or half duplex channels. Galvanic isolation in both channels
3pcs RS422 channels. Galvanic isolation in both channels
One channel with RS-422/RS-232 alternative drivers. RS-422 driver with galvanic isolation. RS-232 available in RJ45 connector.
TCP/IP Server and UDP modes to communicate over the Ethernet.
RS-422/RS-585
RS-422
RS-422/RS-232
CAN
One CAN bus interface channel. CAN 2.0 A&B versions. With Galvanic isolation.
Remote I/O Server
Protocol
MODBUS/TCP
Digital inputs
Type
Signal levels
32 of galvanic isolated digital input channels. Wiring to spring cage plug-in terminal
Digital inputs are grouped in 8 inputs PNP/NPN Logic 0: 0 to 5 VDC,
Logic 1: 10 to 32 VDC (DI COM to DI) Input resistance 5,6 kΩ
Digital outputs
Type
Protection
32 output channels. Galvanic isolation from the processor voltages. NPN (open drain FET), maximum load side supply voltage 36 VDC
Outputs can also be operated as PWM outputs. Connections are either available as onboard spring cage plug connectors or as Flat
cable connectors for connection to relay modules.
Short circuit and over heating protection.
Analogue inputs
Type
Reference voltage output
4 (single ended) input channels. Wiring to spring cage plug-in terminal
±10 V signal range, 16-bit resolution, Input resistance 180 kΩ
Buffered ±10 V (±3%) Reference output. Maximum 200 Ω load.
Analogue outputs
Type
4 output channels
±10 V signal range
16-bit resolution
±10 mA output current
About us
Insatech A/S was established in 1989,
and has, over the years, had a positive
business development; today we are more
than 50 employees, and are considered
one of the market leaders.
We are based in Vordingborg in the south
of Zealand, Denmark in an old historic
building.
Since December 2005 we are part
of the Addtech Group of companies
– Addtech AB, Stockholm.
As a result of our longstanding partnership
with some of the world’s leading
manufacturers within instrumentation
and automation, we are able to provide
a global service.
We supply quality products, solutions
and services in the fields of measurement,
control and calibration to nearly all
industrial segments, as well as utilities,
and we work as a professional partner for
our suppliers and for our customers
– we believe in long term relationships.
Our main markets are in the Pharmaceutical,
Food, Energy, Marine/Oil & Gas Industry,
which means we have a strong knowledge
of the special applications, as well as the
requirements for documentation in these
areas.
• Process instrumentation and calibration
equipment
• Automation, control and data acquisition
• System design, engineering and validation
(DCS and Safety Systems)
• Service/maintenance and calibration
(ISO 17025 accreditation)
• Site surveys and evaluation of process
optimization based on better control
practices
• Marine- and ship solutions,
Cargo Management Systems
• Project Management
• Flow rigs / calibration rigs
• Special fittings
• Product enhancements
• Wireless solutions for monitoring
and control
• Complete solutions including panels
and commissioning
• Seminars and training.
People - Ideas - Solutions
Marine
Insatech A/S • Algade 133 • DK-4760 Vordingborg • Denmark
Tel. +45 5537 2095 • www.insatech.com
Conductivity calibration
Temperature calibration
Electrical calibration
2013-09-001_NMEA2MODB © Insatech A/S - Reproduction of text or excerpts of this is authorized provided the source is acknowledged.
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